Prospective evaluation of a first trimester screening program for Down syndrome and other chromosomal abnormalities using maternal age, nuchal translucency and biochemistry in an Australian population
UK multicentre project on assessment of risk of trisomy 21 by maternal age and fetal nuchal-translucency thickness at 10-14 weeks of gestation
Snijders RJM, Noble P, Sebire N, Souka A, Nicolaides KH. UK multicentre project on assessment of risk of trisomy 21 by maternal age and fetal nuchal-translucency thickness at 10-14 weeks of gestation. Lancet. 1998; 352: 343-346.
Randomised comparison of amniocentesis and transabdominal and transcervical chorionic villus sampling
Smidt-Jensen S, Permin M, Philip J, Lundsteen C, Zachary JM, Fowler SE, Gruning K. Randomised comparison of amniocentesis and transabdominal and transcervical chorionic villus sampling. Lancet. 1992; 340: 1237-1244.
One stop clinic for assessment of risk for fetal anomalies: A report of the first year of prospective screening for chromosomal anomalies in the first trimester
Spencer K, Spencer CE, Power M, Moakes A, Nicolaides KH. One stop clinic for assessment of risk for fetal anomalies: a report of the first year of prospective screening for chromosomal anomalies in the first trimester. Br J Obstet Gynaecol. 2000; 107: 1271-1275.
A screening program for trisomy 21 at 10-14 weeks using fetal nuchal translucency, maternal serum free beta human chorionic gonadotrophin and pregnancy-associated plasma protein-A
Spencer K, Souter V, Tul N, Snijders R, Nicolaides KH. A screening program for trisomy 21 at 10-14 weeks using fetal nuchal translucency, maternal serum free beta human chorionic gonadotrophin and pregnancy-associated plasma protein-A. Ultrasound Obstet Gynecol. 1999; 13: 231-237.
One-stop clinic for assessment of risk for trisomy 21 at 11-14 weeks: A prospective study of 15,030 pregnancies
Bindra R, Heath V, Liao A, Spencer K, Nicolaides KH. One-stop clinic for assessment of risk for trisomy 21 at 11-14 weeks: a prospective study of 15,030 pregnancies. Ultrasound Obstet Gynecol. 2002; 20: 219-225.
Screening for trisomy 21 by maternal age, nuchal translucency and maternal serum biochemistry at 11-14 weeks: A German multicentre study
von Kaisenberg CS, Gasiorek-Wiens A, Bielicki M et al. Screening for trisomy 21 by maternal age, nuchal translucency and maternal serum biochemistry at 11-14 weeks: a German multicentre study. J Matern Fetal Neonatal Med. 2002; 12: 89-94.
Integrated ultrasound and biochemical screening for trisomy 21 using fetal nuchal translucency, absent fetal nasal bone, free beta-hCG and PAPP-A at 11-14 weeks
Cicero S, Bindra R, Rembouskos G, Spencer K, Nicolaides KH. Integrated ultrasound and biochemical screening for trisomy 21 using fetal nuchal translucency, absent fetal nasal bone, free beta-hCG and PAPP-A at 11-14 weeks. Prenat Diagn. 2003; 23: 306-310.